{"id": 5197, "prediction_verbatim": "Copper prices rise within 48h as geopolitical risk premium embeds into base metals", "created_at": "2026-05-17 05:34:24", "direction": null, "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-19 05:50:29", "chain_hash": "3e82271e4bc485678e3df0d4fd10ce2d1229eea597310416e1e1ad116b10640d", "chain_tx": "3knxgya7GuvUSdRKabWkpWFzfiAvw6U8VP8Hv943gsByJhpBFrKM8QTKEB6yapXrLF1qoNCG9YdQPBNVTkekEfvK", "verify": "sha256(f'{prediction_verbatim}|{created_at}|{id}') must equal chain_hash, and the Solana tx memo must read 'workshop:pred:<id>:<chain_hash>' with a timestamp BEFORE resolved_at. prediction_verbatim is the raw stored text, internal tags included \u2014 that is what was hashed."}